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Re: zero inflated beta [was: st: Information request]


From   Clive Nicholas <clivelists@googlemail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: zero inflated beta [was: st: Information request]
Date   Thu, 13 Aug 2009 21:57:40 +0100

Maarten Buis replied to Fabio Zona:

[...]

> Below is a quick stab at implementing such a model. I haven't
> done any checking or certification on it, so it is up to you
> to determine whether this is program actually does what it is
> supposed to do. As a first step I would build a simulated
> dataset where you know what the parameters should be and
> check whether this program actually finds those.

[...]

I ran Maarten's code out of curiosity, but my Stata 8.2 choked at this line

> ml model lf zibeta_lf (logitmu: prop = _I*) /lnphi (zg:left), robust

invalid syntax
r(198);

Thoughts?

-- 
Clive Nicholas

[Please DO NOT mail me personally here, but at
<clivenicholas@hotmail.com>. Please respond to contributions I make in
a list thread here. Thanks!]

"My colleagues in the social sciences talk a great deal about
methodology. I prefer to call it style." -- Freeman J. Dyson.
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